... performance, CharacteristicsUsing IGBT module, inverter frequency of 18 KHz, dynamic fast response and easy arc starting, arc stability performance, and ... of less than 100 W, as compared with conventional welding machine, to save electricity by 50%. Welding low carbon steel, ... steel and Cr-Mo steel, copper, titanium, etc. almost all black metal, weld quality can be obtained. TypeZX7-300ZX7-315ZX7 ...